nrao.edu website information.
nrao.edu domain name is registered by .EDU top-level domain registry. See the other sites registred in .EDU domain zone.
Following name servers are specified for nrao.edu domain:
- zia.aoc.nrao.edu
- cv3.cv.nrao.edu
- sadira.gb.nrao.edu
and probably website nrao.edu is hosted by FASTLY - Fastly, US web hosting company. Check the complete list of other most popular websites hosted by FASTLY - Fastly, US hosting company.
According to Alexa traffic rank the highest website nrao.edu position was 8682 (in the world). The lowest Alexa rank position was 9237. Now website nrao.edu ranked in Alexa database as number 9115 (in the world).
Website nrao.edu Desktop speed measurement score (47/100) is better than the results of 20.85% of other sites shows that the page desktop performance can be improved.
nrao.edu Mobile usability score (96/100) is better than the results of 46.59% of other sites and means that the page is mobile-friendly.
Mobile speed measurement score of nrao.edu (34/100) is better than the results of 12.98% of other sites and shows that the landing page performance on mobile devices is poor and can be improved.
Weekly Rank Report
| Date | Rank | Change |
|---|---|---|
| Nov-08-2024 | 9,115 | 48 |
| Nov-07-2024 | 9,163 | 45 |
| Nov-06-2024 | 9,208 | -80 |
| Nov-05-2024 | 9,128 | 109 |
| Nov-04-2024 | 9,237 | -145 |
| Nov-03-2024 | 9,092 | 15 |
| Nov-02-2024 | 9,107 | 56 |
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nrao.edu Rank History
Alexa can identify the popularity of a website as well as its competitors. It is important for website owners and bloggers to know their Alexa ranking because it shows how many visitors have viewed their web page. It gives them a clear idea of how popular their website is on the internet and the ranking of their competitors.
nrao.edu whois
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The data in the EDUCAUSE Whois database is provided
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or related to .edu domain registration records.
The EDUCAUSE Whois database is authoritative for the
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A Web interface for the .EDU EDUCAUSE Whois Server is
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By submitting a Whois query, you agree that this information
will not be used to allow, enable, or otherwise support
the transmission of unsolicited commercial advertising or
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harvest information from this server is generally prohibited
except as reasonably necessary to register or modify .edu
domain names.
-------------------------------------------------------------
Domain Name: NRAO.EDU
Registrant:
National Radio Astronomy Observatory
520 Edgemont Road
Charlottesville, VA 22903-2475
USA
Administrative Contact:
David Halstead
National Radio Astronomy Observatory
520 Edgemont Road
Charlottesville, VA 22903-2475
USA
+1.4342960211
admin@nrao.edu
Technical Contact:
Tech Admin
National Radio Astronomy Observatory
520 Edgemont Road
Charlottesville, VA 22903-2475
USA
+1.4342960211
tech@nrao.edu
Name Servers:
SADIRA.GB.NRAO.EDU
ZIA.AOC.NRAO.EDU
CV3.CV.NRAO.EDU
Domain record activated: 17-Dec-1987
Domain record last updated: 11-Aug-2023
Domain expires: 31-Jul-2026
nrao.edu server information
nrao.edu desktop page speed rank
Last tested: 2017-05-31
Desktop Speed
Bad
47/100
nrao.edu Desktop Speed Test Quick Summary
priority - 43 Enable compression
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priority - 24 Eliminate render-blocking JavaScript and CSS in above-the-fold content
Your page has 6 blocking script resources and 9 blocking CSS resources. This causes a delay in rendering your page.
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Optimize CSS Delivery of the following:
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priority - 18 Optimize images
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priority - 16 Leverage browser caching
Setting an expiry date or a maximum age in the HTTP headers for static resources instructs the browser to load previously downloaded resources from local disk rather than over the network.
Leverage browser caching for the following cacheable resources:
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https://connect.facebook.net/en_US/sdk.js (20 minutes)
https://platform.twitter.com/widgets.js (30 minutes)
https://www.google-analytics.com/analytics.js (2 hours)
priority - 9 Avoid landing page redirects
Your page has 2 redirects. Redirects introduce additional delays before the page can be loaded.
Avoid landing page redirects for the following chain of redirected URLs.
http://nrao.edu/
https://www.nrao.edu/
https://public.nrao.edu/
https://www.nrao.edu/
https://public.nrao.edu/
priority - 7 Minify JavaScript
Compacting JavaScript code can save many bytes of data and speed up downloading, parsing, and execution time.
Minify JavaScript for the following resources to reduce their size by 63.5KiB (43% reduction).
Minifying https://public.nrao.edu/wp-content/themes/nrao/inc/slick/slick.js could save 32.7KiB (40% reduction).
Minifying https://public.nrao.edu/wp-content/themes/nrao/js/tablesorter.js?ver=4.7.5 could save 23.8KiB (59% reduction).
Minifying https://public.nrao.edu/wp-content/themes/nrao/js/main.js?ver=20160511 could save 3.1KiB (29% reduction).
Minifying https://public.nrao.edu/wp-content/plugins/contact…/js/scripts.js?ver=4.7 could save 3KiB (23% reduction).
Minifying https://public.nrao.edu/wp-content/themes/nrao/js/…gation.js?ver=20151215 could save 903B (40% reduction).
Minifying https://public.nrao.edu/wp-content/themes/nrao/js/tablesorter.js?ver=4.7.5 could save 23.8KiB (59% reduction).
Minifying https://public.nrao.edu/wp-content/themes/nrao/js/main.js?ver=20160511 could save 3.1KiB (29% reduction).
Minifying https://public.nrao.edu/wp-content/plugins/contact…/js/scripts.js?ver=4.7 could save 3KiB (23% reduction).
Minifying https://public.nrao.edu/wp-content/themes/nrao/js/…gation.js?ver=20151215 could save 903B (40% reduction).
priority - 4 Minify CSS
Compacting CSS code can save many bytes of data and speed up download and parse times.
Minify CSS for the following resources to reduce their size by 33.8KiB (25% reduction).
Minifying https://public.nrao.edu/wp-content/themes/nrao/css/style.css?ver=4.7.5 could save 33.1KiB (25% reduction).
Minifying https://public.nrao.edu/wp-content/themes/nrao/inc/slick/slick-theme.css could save 688B (21% reduction).
Minifying https://public.nrao.edu/wp-content/themes/nrao/inc/slick/slick-theme.css could save 688B (21% reduction).
priority - 3 Reduce server response time
In our test, your server responded in 0.46 seconds. There are many factors that can slow down your server response time. Please read our recommendations to learn how you can monitor and measure where your server is spending the most time.
priority - 1 Minify HTML
Compacting HTML code, including any inline JavaScript and CSS contained in it, can save many bytes of data and speed up download and parse times.
Minify HTML for the following resources to reduce their size by 6.8KiB (18% reduction).
Minifying https://public.nrao.edu/ could save 6.1KiB (17% reduction).
Minifying https://t.sharethis.com/1/d/t.dhj?rnd=149627523297…10&dmn=public.nrao.edu could save 760B (50% reduction) after compression.
Minifying https://t.sharethis.com/1/d/t.dhj?rnd=149627523297…10&dmn=public.nrao.edu could save 760B (50% reduction) after compression.
nrao.edu Desktop Resources
| Total Resources | 131 |
| Number of Hosts | 35 |
| Static Resources | 63 |
| JavaScript Resources | 34 |
| CSS Resources | 11 |
nrao.edu Desktop Resource Breakdown
nrao.edu mobile page speed rank
Last tested: 2017-05-30
Mobile Speed
Bad
34/100
nrao.edu Mobile Speed Test Quick Summary
priority - 96 Eliminate render-blocking JavaScript and CSS in above-the-fold content
Your page has 6 blocking script resources and 8 blocking CSS resources. This causes a delay in rendering your page.
None of the above-the-fold content on your page could be rendered without waiting for the following resources to load. Try to defer or asynchronously load blocking resources, or inline the critical portions of those resources directly in the HTML.
Remove render-blocking JavaScript:
https://public.nrao.edu/wp-includes/js/jquery/jquery.js?ver=1.12.4
https://public.nrao.edu/wp-includes/js/jquery/jque…grate.min.js?ver=1.4.1
https://ws.sharethis.com/button/st_insights.js?pub…e6&product=simpleshare
https://ajax.googleapis.com/ajax/libs/jqueryui/1.1…y-ui.min.js?ver=1.11.4
https://public.nrao.edu/wp-content/themes/nrao/js/tablesorter.js?ver=4.7.5
https://use.fontawesome.com/8ebef3fc7f.js?ver=4.7.5
https://public.nrao.edu/wp-includes/js/jquery/jque…grate.min.js?ver=1.4.1
https://ws.sharethis.com/button/st_insights.js?pub…e6&product=simpleshare
https://ajax.googleapis.com/ajax/libs/jqueryui/1.1…y-ui.min.js?ver=1.11.4
https://public.nrao.edu/wp-content/themes/nrao/js/tablesorter.js?ver=4.7.5
https://use.fontawesome.com/8ebef3fc7f.js?ver=4.7.5
Optimize CSS Delivery of the following:
https://public.nrao.edu/wp-content/plugins/contact…css/styles.css?ver=4.7
https://public.nrao.edu/wp-content/themes/nrao/css…fontsKit.css?ver=4.7.5
https://public.nrao.edu/wp-content/themes/nrao/css/style.css?ver=4.7.5
https://fonts.googleapis.com/css?family=Montserrat…%27%20type=%27text/css
https://use.fontawesome.com/8ebef3fc7f.css
https://use.fontawesome.com/releases/v4.7.0/css/font-awesome-css.min.css
https://public.nrao.edu/wp-content/themes/nrao/inc/slick/slick.css
https://public.nrao.edu/wp-content/themes/nrao/inc/slick/slick-theme.css
https://public.nrao.edu/wp-content/themes/nrao/css…fontsKit.css?ver=4.7.5
https://public.nrao.edu/wp-content/themes/nrao/css/style.css?ver=4.7.5
https://fonts.googleapis.com/css?family=Montserrat…%27%20type=%27text/css
https://use.fontawesome.com/8ebef3fc7f.css
https://use.fontawesome.com/releases/v4.7.0/css/font-awesome-css.min.css
https://public.nrao.edu/wp-content/themes/nrao/inc/slick/slick.css
https://public.nrao.edu/wp-content/themes/nrao/inc/slick/slick-theme.css
priority - 38 Enable compression
Compressing resources with gzip or deflate can reduce the number of bytes sent over the network.
Enable compression for the following resources to reduce their transfer size by 367.7KiB (75% reduction).
Compressing https://public.nrao.edu/wp-content/themes/nrao/css/style.css?ver=4.7.5 could save 105.6KiB (82% reduction).
Compressing https://public.nrao.edu/wp-content/themes/nrao/inc/slick/slick.js could save 68.3KiB (82% reduction).
Compressing https://public.nrao.edu/wp-includes/js/jquery/jquery.js?ver=1.12.4 could save 61.9KiB (65% reduction).
Compressing https://public.nrao.edu/wp-content/themes/nrao/js/tablesorter.js?ver=4.7.5 could save 31.9KiB (79% reduction).
Compressing https://public.nrao.edu/ could save 27.1KiB (74% reduction).
Compressing https://public.nrao.edu/wp-content/themes/nrao/js/…-popup.js?ver=20160511 could save 12.6KiB (63% reduction).
Compressing https://public.nrao.edu/wp-content/themes/nrao/css…fontsKit.css?ver=4.7.5 could save 12.4KiB (92% reduction).
Compressing https://public.nrao.edu/wp-content/plugins/contact…/js/scripts.js?ver=4.7 could save 9.8KiB (73% reduction).
Compressing https://public.nrao.edu/wp-content/plugins/contact…?ver=3.51.0-2014.06.20 could save 9.2KiB (61% reduction).
Compressing https://public.nrao.edu/wp-content/themes/nrao/js/main.js?ver=20160511 could save 8.6KiB (78% reduction).
Compressing https://public.nrao.edu/wp-includes/js/wp-emoji-release.min.js?ver=4.7.5 could save 7KiB (62% reduction).
Compressing https://public.nrao.edu/wp-includes/js/jquery/jque…grate.min.js?ver=1.4.1 could save 5.9KiB (60% reduction).
Compressing https://public.nrao.edu/wp-content/themes/nrao/inc/slick/slick-theme.css could save 2.3KiB (72% reduction).
Compressing https://public.nrao.edu/wp-content/themes/nrao/js/…gation.js?ver=20151215 could save 1.4KiB (61% reduction).
Compressing https://public.nrao.edu/wp-content/themes/nrao/inc/slick/slick.css could save 1.1KiB (67% reduction).
Compressing https://public.nrao.edu/wp-content/themes/nrao/inc/slickslider.js could save 980B (64% reduction).
Compressing https://public.nrao.edu/wp-content/plugins/contact…css/styles.css?ver=4.7 could save 972B (60% reduction).
Compressing https://public.nrao.edu/wp-includes/js/wp-embed.min.js?ver=4.7.5 could save 647B (47% reduction).
Compressing https://public.nrao.edu/wp-content/themes/nrao/inc/slick/slick.js could save 68.3KiB (82% reduction).
Compressing https://public.nrao.edu/wp-includes/js/jquery/jquery.js?ver=1.12.4 could save 61.9KiB (65% reduction).
Compressing https://public.nrao.edu/wp-content/themes/nrao/js/tablesorter.js?ver=4.7.5 could save 31.9KiB (79% reduction).
Compressing https://public.nrao.edu/ could save 27.1KiB (74% reduction).
Compressing https://public.nrao.edu/wp-content/themes/nrao/js/…-popup.js?ver=20160511 could save 12.6KiB (63% reduction).
Compressing https://public.nrao.edu/wp-content/themes/nrao/css…fontsKit.css?ver=4.7.5 could save 12.4KiB (92% reduction).
Compressing https://public.nrao.edu/wp-content/plugins/contact…/js/scripts.js?ver=4.7 could save 9.8KiB (73% reduction).
Compressing https://public.nrao.edu/wp-content/plugins/contact…?ver=3.51.0-2014.06.20 could save 9.2KiB (61% reduction).
Compressing https://public.nrao.edu/wp-content/themes/nrao/js/main.js?ver=20160511 could save 8.6KiB (78% reduction).
Compressing https://public.nrao.edu/wp-includes/js/wp-emoji-release.min.js?ver=4.7.5 could save 7KiB (62% reduction).
Compressing https://public.nrao.edu/wp-includes/js/jquery/jque…grate.min.js?ver=1.4.1 could save 5.9KiB (60% reduction).
Compressing https://public.nrao.edu/wp-content/themes/nrao/inc/slick/slick-theme.css could save 2.3KiB (72% reduction).
Compressing https://public.nrao.edu/wp-content/themes/nrao/js/…gation.js?ver=20151215 could save 1.4KiB (61% reduction).
Compressing https://public.nrao.edu/wp-content/themes/nrao/inc/slick/slick.css could save 1.1KiB (67% reduction).
Compressing https://public.nrao.edu/wp-content/themes/nrao/inc/slickslider.js could save 980B (64% reduction).
Compressing https://public.nrao.edu/wp-content/plugins/contact…css/styles.css?ver=4.7 could save 972B (60% reduction).
Compressing https://public.nrao.edu/wp-includes/js/wp-embed.min.js?ver=4.7.5 could save 647B (47% reduction).
priority - 34 Avoid landing page redirects
Your page has 2 redirects. Redirects introduce additional delays before the page can be loaded.
Avoid landing page redirects for the following chain of redirected URLs.
http://nrao.edu/
https://www.nrao.edu/
https://public.nrao.edu/
https://www.nrao.edu/
https://public.nrao.edu/
priority - 24 Leverage browser caching
Setting an expiry date or a maximum age in the HTTP headers for static resources instructs the browser to load previously downloaded resources from local disk rather than over the network.
Leverage browser caching for the following cacheable resources:
https://public.nrao.edu/wp-content/themes/nrao/css…fonts/2692AF_1E_0.woff (expiration not specified)
https://public.nrao.edu/wp-content/themes/nrao/img/arrow-left.png (expiration not specified)
https://public.nrao.edu/wp-content/themes/nrao/img/arrow-right.png (expiration not specified)
https://public.nrao.edu/wp-content/themes/nrao/img/bullet.png (expiration not specified)
https://public.nrao.edu/wp-content/themes/nrao/img/logoAUI.png (expiration not specified)
https://public.nrao.edu/wp-content/themes/nrao/img/logoNRAO.png (expiration not specified)
https://public.nrao.edu/wp-content/themes/nrao/img/logoNSF.gif (expiration not specified)
https://public.nrao.edu/wp-content/themes/nrao/img/logotext.png (expiration not specified)
https://public.nrao.edu/wp-content/themes/nrao/img/swoosh-pale.png (expiration not specified)
https://public.nrao.edu/wp-content/themes/nrao/inc/slick/ajax-loader.gif (expiration not specified)
https://public.nrao.edu/wp-content/themes/nrao/inc/slick/fonts/slick.woff (expiration not specified)
https://public.nrao.edu/wp-content/themes/nrao/inc/slick/slick-theme.css (expiration not specified)
https://public.nrao.edu/wp-content/themes/nrao/inc/slick/slick.css (expiration not specified)
https://public.nrao.edu/wp-content/themes/nrao/inc/slick/slick.js (expiration not specified)
https://public.nrao.edu/wp-content/themes/nrao/inc/slickslider.js (expiration not specified)
https://public.nrao.edu/wp-content/uploads/2016/05/News_VLA_2.png (expiration not specified)
https://public.nrao.edu/wp-content/uploads/2016/05…cFeat_MWE_SolarSys.png (expiration not specified)
https://public.nrao.edu/wp-content/uploads/2016/05/crabhero.jpg (expiration not specified)
https://public.nrao.edu/wp-content/uploads/2016/07….18.16-AM-1170x600.png (expiration not specified)
https://public.nrao.edu/wp-content/uploads/2016/10/ALMA-1170x600.jpg (expiration not specified)
https://public.nrao.edu/wp-content/uploads/2016/10…1.03.51-AM-585x300.png (expiration not specified)
https://public.nrao.edu/wp-content/uploads/2016/10/VLA-1170x600.jpg (expiration not specified)
https://public.nrao.edu/wp-content/uploads/2016/12…9.45.56-AM-585x300.png (expiration not specified)
https://public.nrao.edu/wp-content/uploads/2017/03/M51_300dpi-1170x600.jpg (expiration not specified)
https://public.nrao.edu/wp-content/uploads/2017/05/nrao17cb20a-1170x600.jpg (expiration not specified)
https://public.nrao.edu/wp-content/uploads/2017/05/nrao17df01f-1170x600.jpg (expiration not specified)
https://public.nrao.edu/wp-content/uploads/2017/05…o17df04-a-1170x600.jpg (expiration not specified)
https://ws.sharethis.com/button/p.js (expiration not specified)
https://cdn.syndication.twimg.com/timeline/profile…436&with_replies=false (5 minutes)
https://connect.facebook.net/en_US/sdk.js (20 minutes)
https://platform.twitter.com/widgets.js (30 minutes)
https://www.google-analytics.com/analytics.js (2 hours)
https://public.nrao.edu/wp-content/themes/nrao/img/arrow-left.png (expiration not specified)
https://public.nrao.edu/wp-content/themes/nrao/img/arrow-right.png (expiration not specified)
https://public.nrao.edu/wp-content/themes/nrao/img/bullet.png (expiration not specified)
https://public.nrao.edu/wp-content/themes/nrao/img/logoAUI.png (expiration not specified)
https://public.nrao.edu/wp-content/themes/nrao/img/logoNRAO.png (expiration not specified)
https://public.nrao.edu/wp-content/themes/nrao/img/logoNSF.gif (expiration not specified)
https://public.nrao.edu/wp-content/themes/nrao/img/logotext.png (expiration not specified)
https://public.nrao.edu/wp-content/themes/nrao/img/swoosh-pale.png (expiration not specified)
https://public.nrao.edu/wp-content/themes/nrao/inc/slick/ajax-loader.gif (expiration not specified)
https://public.nrao.edu/wp-content/themes/nrao/inc/slick/fonts/slick.woff (expiration not specified)
https://public.nrao.edu/wp-content/themes/nrao/inc/slick/slick-theme.css (expiration not specified)
https://public.nrao.edu/wp-content/themes/nrao/inc/slick/slick.css (expiration not specified)
https://public.nrao.edu/wp-content/themes/nrao/inc/slick/slick.js (expiration not specified)
https://public.nrao.edu/wp-content/themes/nrao/inc/slickslider.js (expiration not specified)
https://public.nrao.edu/wp-content/uploads/2016/05/News_VLA_2.png (expiration not specified)
https://public.nrao.edu/wp-content/uploads/2016/05…cFeat_MWE_SolarSys.png (expiration not specified)
https://public.nrao.edu/wp-content/uploads/2016/05/crabhero.jpg (expiration not specified)
https://public.nrao.edu/wp-content/uploads/2016/07….18.16-AM-1170x600.png (expiration not specified)
https://public.nrao.edu/wp-content/uploads/2016/10/ALMA-1170x600.jpg (expiration not specified)
https://public.nrao.edu/wp-content/uploads/2016/10…1.03.51-AM-585x300.png (expiration not specified)
https://public.nrao.edu/wp-content/uploads/2016/10/VLA-1170x600.jpg (expiration not specified)
https://public.nrao.edu/wp-content/uploads/2016/12…9.45.56-AM-585x300.png (expiration not specified)
https://public.nrao.edu/wp-content/uploads/2017/03/M51_300dpi-1170x600.jpg (expiration not specified)
https://public.nrao.edu/wp-content/uploads/2017/05/nrao17cb20a-1170x600.jpg (expiration not specified)
https://public.nrao.edu/wp-content/uploads/2017/05/nrao17df01f-1170x600.jpg (expiration not specified)
https://public.nrao.edu/wp-content/uploads/2017/05…o17df04-a-1170x600.jpg (expiration not specified)
https://ws.sharethis.com/button/p.js (expiration not specified)
https://cdn.syndication.twimg.com/timeline/profile…436&with_replies=false (5 minutes)
https://connect.facebook.net/en_US/sdk.js (20 minutes)
https://platform.twitter.com/widgets.js (30 minutes)
https://www.google-analytics.com/analytics.js (2 hours)
priority - 7 Minify JavaScript
Compacting JavaScript code can save many bytes of data and speed up downloading, parsing, and execution time.
Minify JavaScript for the following resources to reduce their size by 63.5KiB (43% reduction).
Minifying https://public.nrao.edu/wp-content/themes/nrao/inc/slick/slick.js could save 32.7KiB (40% reduction).
Minifying https://public.nrao.edu/wp-content/themes/nrao/js/tablesorter.js?ver=4.7.5 could save 23.8KiB (59% reduction).
Minifying https://public.nrao.edu/wp-content/themes/nrao/js/main.js?ver=20160511 could save 3.1KiB (29% reduction).
Minifying https://public.nrao.edu/wp-content/plugins/contact…/js/scripts.js?ver=4.7 could save 3KiB (23% reduction).
Minifying https://public.nrao.edu/wp-content/themes/nrao/js/…gation.js?ver=20151215 could save 903B (40% reduction).
Minifying https://public.nrao.edu/wp-content/themes/nrao/js/tablesorter.js?ver=4.7.5 could save 23.8KiB (59% reduction).
Minifying https://public.nrao.edu/wp-content/themes/nrao/js/main.js?ver=20160511 could save 3.1KiB (29% reduction).
Minifying https://public.nrao.edu/wp-content/plugins/contact…/js/scripts.js?ver=4.7 could save 3KiB (23% reduction).
Minifying https://public.nrao.edu/wp-content/themes/nrao/js/…gation.js?ver=20151215 could save 903B (40% reduction).
priority - 7 Optimize images
Properly formatting and compressing images can save many bytes of data.
Optimize the following images to reduce their size by 63.5KiB (82% reduction).
Compressing https://pbs.twimg.com/profile_images/1119692209/NRAO_logosquare_bigger.jpg could save 23.4KiB (91% reduction).
Compressing https://public.nrao.edu/wp-content/themes/nrao/img/logoNRAO.png could save 18.4KiB (86% reduction).
Compressing https://public.nrao.edu/wp-content/themes/nrao/img/logoAUI.png could save 17.7KiB (90% reduction).
Compressing https://pbs.twimg.com/profile_images/806581827192418304/g7Gr7n6G_bigger.jpg could save 1KiB (42% reduction).
Compressing https://pbs.twimg.com/profile_images/751308808442437632/TcVUCFPR_bigger.jpg could save 1KiB (34% reduction).
Compressing https://pbs.twimg.com/profile_images/841331162731667459/K-ljec8v_bigger.jpg could save 953B (40% reduction).
Compressing https://pbs.twimg.com/profile_images/832741536123084801/56fxqj9n_bigger.jpg could save 950B (37% reduction).
Compressing https://public.nrao.edu/wp-content/themes/nrao/img/logoNRAO.png could save 18.4KiB (86% reduction).
Compressing https://public.nrao.edu/wp-content/themes/nrao/img/logoAUI.png could save 17.7KiB (90% reduction).
Compressing https://pbs.twimg.com/profile_images/806581827192418304/g7Gr7n6G_bigger.jpg could save 1KiB (42% reduction).
Compressing https://pbs.twimg.com/profile_images/751308808442437632/TcVUCFPR_bigger.jpg could save 1KiB (34% reduction).
Compressing https://pbs.twimg.com/profile_images/841331162731667459/K-ljec8v_bigger.jpg could save 953B (40% reduction).
Compressing https://pbs.twimg.com/profile_images/832741536123084801/56fxqj9n_bigger.jpg could save 950B (37% reduction).
priority - 4 Reduce server response time
In our test, your server responded in 0.47 seconds. There are many factors that can slow down your server response time. Please read our recommendations to learn how you can monitor and measure where your server is spending the most time.
priority - 3 Minify CSS
Compacting CSS code can save many bytes of data and speed up download and parse times.
Minify CSS for the following resources to reduce their size by 33KiB (26% reduction).
Minifying https://public.nrao.edu/wp-content/themes/nrao/css/style.css?ver=4.7.5 could save 32.4KiB (26% reduction).
Minifying https://public.nrao.edu/wp-content/themes/nrao/inc/slick/slick-theme.css could save 688B (21% reduction).
Minifying https://public.nrao.edu/wp-content/themes/nrao/inc/slick/slick-theme.css could save 688B (21% reduction).
priority - 1 Minify HTML
Compacting HTML code, including any inline JavaScript and CSS contained in it, can save many bytes of data and speed up download and parse times.
Minify HTML for the following resources to reduce their size by 6.6KiB (18% reduction).
Minifying https://public.nrao.edu/ could save 5.9KiB (17% reduction).
Minifying https://t.sharethis.com/1/d/t.dhj?rnd=149619301973…10&dmn=public.nrao.edu could save 759B (50% reduction) after compression.
Minifying https://t.sharethis.com/1/d/t.dhj?rnd=149619301973…10&dmn=public.nrao.edu could save 759B (50% reduction) after compression.
nrao.edu Mobile Resources
| Total Resources | 121 |
| Number of Hosts | 35 |
| Static Resources | 62 |
| JavaScript Resources | 26 |
| CSS Resources | 10 |
nrao.edu Mobile Resource Breakdown
nrao.edu mobile page usability
Last tested: 2017-05-30
Mobile Usability
Good
96/100
nrao.edu Mobile Usability Test Quick Summary
priority - 3 Size tap targets appropriately
Some of the links/buttons on your webpage may be too small for a user to easily tap on a touchscreen. Consider making these tap targets larger to provide a better user experience.
The following tap targets are close to other nearby tap targets and may need additional spacing around them.
The tap target
<a href="https://public…dio-astronomy/">Learn more abo…dio astronomy!</a> is close to 2 other tap targets.The tap target
<ul class="slick-dots">123</ul> is close to 2 other tap targets.The tap target
<ul class="slick-dots">123</ul> and 8 others are close to other tap targets.The tap target
<li id="slick-slide012" class="slick-active">1</li> and 2 others are close to other tap targets.The tap target
<button type="button">1</button> and 2 others are close to other tap targets.The tap target
<a href="https://twitter.com/almaobs" class="TweetAuthor-li…ty u-linkBlend">ALMA Observato…@almaobs</a> is close to 1 other tap targets.The tap target
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nrao.edu Ping
Ping is a networking utility tool to test if a particular host is reachable. It is a diagnostic that checks reachability of a host on an Internet Protocol (IP) network. In a computer network, a ping test is a way of sending messages from one host to another. Aside from checking if the host is connected to a network, ping also gives indicators of the reliability and general speed of the connection.
nrao.edu TRACEROUTE
Traceroute is a network diagnostic tool used to track the pathway taken by a packet on an IP network from source to destination. Traceroute also records the time taken for each hop the packet makes during its route to the destination. Traceroute uses ICMP (Internet Control Message Protocol) echo packets with variable time to live values. The response time of each hop is calculated. To guarantee accuracy, each hop is queried multiple times (usually three times) to better measure the response of that particular hop.